198071798 has 16 divisors (see below), whose sum is σ = 308178000. Its totient is φ = 95364192.

The previous prime is 198071773. The next prime is 198071821. The reversal of 198071798 is 897170891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18173 + ... + 26951.

It is an arithmetic number, because the mean of its divisors is an integer number (19261125).

Almost surely, 2^198071798 is an apocalyptic number.

198071798 is a deficient number, since it is larger than the sum of its proper divisors (110106202).

198071798 is a wasteful number, since it uses less digits than its factorization.

198071798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9199.

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 198071798 is about 14073.7982790716. The cubic root of 198071798 is about 582.9181098062.

The spelling of 198071798 in words is "one hundred ninety-eight million, seventy-one thousand, seven hundred ninety-eight".